Portable computer

1. A portable computer, comprising: a host; a display portion being pivotally connected with the host and having an accommodation concave space; and a plurality of functional modules each having the same connecting structure to be engaged within the accommodation concave space, either one of the functional modules being installed within the accommodation concave space.

2. The portable computer of claim 1 , wherein at least one of the functional modules is a camera module or an image projection module.

3. The portable computer of claim 2 , wherein the camera module and image projection module both have a wireless unit to communicate with the host.

4. The portable computer of claim 3 , wherein the wireless unit is a blue tooth wireless module.

5. The portable computer of claim 2 , wherein the camera module comprises a CMOS sensor or a CCD sensor.

6. The portable computer of claim 2 , wherein the image projection module is a liquid-crystal-on-silicon (LCOS) projection device.

7. The portable computer of claim 1 , further comprising a pair of hinges disposed within the accommodation concave space to pivotally connected with at least one of the functional modules.

8. The portable computer of claim 7 , wherein one of the pair of hinges comprises a spring.

9. The portable computer of claim 7 , wherein each of the pair of hinges comprises a concave section, the connecting structure is a convex member, each functional module has the convex members on two opposite ends thereof.

10. The portable computer of claim 9 , wherein each functional module has two concave areas on two opposite ends thereof, the convex member is disposed within each of the concave areas.